Lionel Bender

How do scientists study the moon that is out in space or tiny cells? When things are far away or very small, scientists use magnifying tools to help make things appear bigger and more clear.

Photographs and text explore such inventions as the wheel, gears, levers, clocks, telephones, and rocket engines.

Describes the animals inhabiting the polar regions of the world and how they have adapted to the climate there.

An introduction to various species of spiders, their physical characteristics, and their behavior patterns.

The inside story of how the human body works.

A geological explanation of the reasons and ways in which caves are formed with a discussion of their uses throughout history.